<?xml version="1.0" encoding="ISO-8859-1"?><article xmlns:mml="http://www.w3.org/1998/Math/MathML" xmlns:xlink="http://www.w3.org/1999/xlink" xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance">
<front>
<journal-meta>
<journal-id>1405-3322</journal-id>
<journal-title><![CDATA[Boletín de la Sociedad Geológica Mexicana]]></journal-title>
<abbrev-journal-title><![CDATA[Bol. Soc. Geol. Mex]]></abbrev-journal-title>
<issn>1405-3322</issn>
<publisher>
<publisher-name><![CDATA[Sociedad Geológica Mexicana A.C.]]></publisher-name>
</publisher>
</journal-meta>
<article-meta>
<article-id>S1405-33222022000200102</article-id>
<article-id pub-id-type="doi">10.18268/bsgm2022v74n2a230422</article-id>
<title-group>
<article-title xml:lang="en"><![CDATA[The paleoenvironmental significance of trace fossils from the Cárdenas Formation (Late Cretaceous, Maastrichtian) at Potrero del Carnero, San Luis Potosí, central Mexico]]></article-title>
<article-title xml:lang="es"><![CDATA[La importancia paleoambiental de las trazas fósiles de la Formación Cárdenas (Cretácico Tardío, Maastrichtiano) en Potrero del Carnero, San Luis Potosí, centro de México]]></article-title>
</title-group>
<contrib-group>
<contrib contrib-type="author">
<name>
<surname><![CDATA[Palma-Ramírez]]></surname>
<given-names><![CDATA[Arturo]]></given-names>
</name>
<xref ref-type="aff" rid="Aff"/>
</contrib>
<contrib contrib-type="author">
<name>
<surname><![CDATA[Maldonado-Sarabia]]></surname>
<given-names><![CDATA[Roberto Carlos]]></given-names>
</name>
<xref ref-type="aff" rid="Aff"/>
</contrib>
<contrib contrib-type="author">
<name>
<surname><![CDATA[Stimson]]></surname>
<given-names><![CDATA[Matthew R.]]></given-names>
</name>
<xref ref-type="aff" rid="Aff"/>
</contrib>
<contrib contrib-type="author">
<name>
<surname><![CDATA[López-Palomino]]></surname>
<given-names><![CDATA[Isabel]]></given-names>
</name>
<xref ref-type="aff" rid="Aff"/>
</contrib>
<contrib contrib-type="author">
<name>
<surname><![CDATA[Romo-Ramírez]]></surname>
<given-names><![CDATA[Julio Reyes]]></given-names>
</name>
<xref ref-type="aff" rid="Aff"/>
</contrib>
<contrib contrib-type="author">
<name>
<surname><![CDATA[Muñóz-Jarillo]]></surname>
<given-names><![CDATA[Carlos Rene]]></given-names>
</name>
<xref ref-type="aff" rid="Aff"/>
</contrib>
<contrib contrib-type="author">
<name>
<surname><![CDATA[Badillo-Cadena]]></surname>
<given-names><![CDATA[Lisbeth Adenaly]]></given-names>
</name>
<xref ref-type="aff" rid="Aff"/>
</contrib>
</contrib-group>
<aff id="Af1">
<institution><![CDATA[,Pachuca  ]]></institution>
<addr-line><![CDATA[Pachuca Hidalgo]]></addr-line>
<country>Mexico</country>
</aff>
<aff id="Af2">
<institution><![CDATA[,Servicio Geológico Mexicano  ]]></institution>
<addr-line><![CDATA[Saltillo Coahuila]]></addr-line>
<country>Mexico</country>
</aff>
<aff id="Af3">
<institution><![CDATA[,New Brunswick Museum  ]]></institution>
<addr-line><![CDATA[ ]]></addr-line>
<country>Canada</country>
</aff>
<aff id="Af4">
<institution><![CDATA[,Servicio Geológico Mexicano Departamento de Estratigrafía ]]></institution>
<addr-line><![CDATA[Pachuca Hidalgo]]></addr-line>
<country>Mexico</country>
</aff>
<aff id="Af5">
<institution><![CDATA[,Servicio Geológico Mexicano Gerencia Regional Centro ]]></institution>
<addr-line><![CDATA[San Luis Potosí San Luis Potosí]]></addr-line>
<country>Mexico</country>
</aff>
<aff id="Af6">
<institution><![CDATA[,Puebla  ]]></institution>
<addr-line><![CDATA[Puebla Puebla]]></addr-line>
<country>Mexico</country>
</aff>
<pub-date pub-type="pub">
<day>00</day>
<month>00</month>
<year>2022</year>
</pub-date>
<pub-date pub-type="epub">
<day>00</day>
<month>00</month>
<year>2022</year>
</pub-date>
<volume>74</volume>
<numero>2</numero>
<copyright-statement/>
<copyright-year/>
<self-uri xlink:href="http://www.scielo.org.mx/scielo.php?script=sci_arttext&amp;pid=S1405-33222022000200102&amp;lng=en&amp;nrm=iso"></self-uri><self-uri xlink:href="http://www.scielo.org.mx/scielo.php?script=sci_abstract&amp;pid=S1405-33222022000200102&amp;lng=en&amp;nrm=iso"></self-uri><self-uri xlink:href="http://www.scielo.org.mx/scielo.php?script=sci_pdf&amp;pid=S1405-33222022000200102&amp;lng=en&amp;nrm=iso"></self-uri><abstract abstract-type="short" xml:lang="en"><p><![CDATA[ABSTRACT This paper documents the occurrence ofSkolithos linearis, Planolites beverleyensis,andThalassinoidesisp. in the Cárdenas Formation (Late Cretaceous), southeastern San Luis Potosí, central Mexico. This is the second record ofS. linearisfor this lithological unit, whileP. beverleyensisandThalassinoidesisp. are documented for the very first time in this formation. The ichnoassemblage is referred to theCruzianaIchnofacies which, in concert with associated invertebrate body fossils (Exogyra costata), suggest a shoreface setting with moderate- to low-energy conditions and episodic storms.]]></p></abstract>
<abstract abstract-type="short" xml:lang="es"><p><![CDATA[RESUMEN El presente artículo documenta la presencia deSkolithos linearis, Planolites beverleyensisyThalassinoidesisp. en rocas de la Formación Cárdenas (Cretácico Tardío), sureste de San Luis Potosí, en el centro de México. La presencia deS. linearisrepresenta el segundo registro de esta icnoespecie en esta unidad litológica, mientras queP. beverleyensisyThalassinoidesisp. son documentadas por primera vez en esta formación. El icnoensamble fue asignado a la Icnofacies de Cruziana, la cual, en conjunto con los invertebrados fósiles asociados (Exogyra costata), sugiere un ambiente de costa con condiciones de energía moderada a baja y episodios de tormenta.]]></p></abstract>
<kwd-group>
<kwd lng="en"><![CDATA[Ichnofossils]]></kwd>
<kwd lng="en"><![CDATA[Cruziana Ichnofacies]]></kwd>
<kwd lng="en"><![CDATA[Late Cretaceous]]></kwd>
<kwd lng="en"><![CDATA[Cárdenas Formation]]></kwd>
<kwd lng="en"><![CDATA[San Luis Potosí]]></kwd>
<kwd lng="en"><![CDATA[Mexico]]></kwd>
<kwd lng="es"><![CDATA[Icnofósiles]]></kwd>
<kwd lng="es"><![CDATA[Icnofacies de Cruziana]]></kwd>
<kwd lng="es"><![CDATA[Cretácico Tardío]]></kwd>
<kwd lng="es"><![CDATA[Formación Cárdenas]]></kwd>
<kwd lng="es"><![CDATA[San Luis Potosí]]></kwd>
<kwd lng="es"><![CDATA[México]]></kwd>
</kwd-group>
</article-meta>
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